Fedorova M.A.*, Farisenkov S.E., Polilov A.A. 2025. Associative learning and memory in Nephanes titan (Coleoptera: Ptiliidae) // Russian Entomol. J. Vol.34. No.3: 312–317 [in English].
Department of Entomology, Faculty of Biology, Lomonosov Moscow State University, Moscow 119234 Russia.
* Corresponding author
Maria Fedorova: mariafedorova1997@gmail.com ORCID https://orcid.org/0009-0007-3958-9114
Sergey Farisenkov: farisenkov@entomology.bio.msu.ru ORCID https://orcid.org/0000-0003-2634-2204
Alexey Polilov: polilov@gmail.com ORCID https://orcid.org/0000-0002-6214-3627
doi: 10.15298/rusentj.34.3.02
ABSTRACT. Until now, it has remained unclear whether miniature beetles are capable of long-term information retention, which has hindered a comprehensive assessment of the adaptive features of miniature brains across different taxonomic groups. The cognitive abilities of miniature beetles Nephanes titan (Coleoptera: Ptiliidae), were studied, specifically examining their capacity for associative spatial learning and memory retention. The experiment involved training the insects to associate a position of comfort spot on hot arena with a visual stimulus, followed by memory tests 24 hours after. Results indicated that the beetles spent significantly more time in the target sector after training, demonstrating both short-term and long-term memory capabilities. The findings suggest that despite their small size, these insects retain essential cognitive functions comparable to larger species, making them valuable models for studying brain function.
KEY WORDS: associative learning, memory, Ptiliidae, microinsects, miniaturization.